MTU 12 V 4000 Lx4 Operating Instructions Manual page 129

511 – HIHI P-Charge Mix A
Red alarm. Engine stop.
Associated parameter 2.0181.932
Cause
Mixture pressure on A side too
high (limit value 2).
512 – HIHI P-Charge Mix B
Red alarm. Engine stop.
Associated parameter 2.0182.932
Cause
Mixture pressure on B side too
high (limit value 2).
513 – SD P-Coolant Diff
Red alarm.
Associated parameter 1.8004.610
Cause
Coolant differential pressure
sensor defective, short circuit or
wire break.
515 – AL Starter Not Engaged
Yellow alarm.
Associated parameter 1.8004.123
Cause
Gas temperature sensor
defective, short circuit or wire
break.
517 – SD P-Charge Mix before Throttle
Red alarm.
Associated parameter 1.8004.631
Cause
Mixture pressure sensor before
throttle defective, short circuit
or wire break.
Corrective action
1. Check emissions.
2. Check ignition timing (→ Page 160).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 165).
5. Check throttle.
6. Check mixture coolant system.
Corrective action
1. Check emissions.
2. Check ignition timing (→ Page 160).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 165).
5. Check throttle.
6. Check mixture coolant system.
Corrective action
u Check sensors and cabling (B16.1, B16.3), replace if necessary.
Fault is rectified following engine restart.
Corrective action
1. Not available in all engine versions (optional).
2. Check sensor and cabling (B38), replace as necessary.
Corrective action
u Check sensor and cabling (B79.23), replace if necessary. Fault
is rectified following engine restart.
MS15027/00E 2013-10 | Troubleshooting | 129